My ST has been running pretty crappy for a couple weeks. Misfiring under anything over 50% acceleration. But overall running fine under normal driving conditions. I've been telling myself that it's probably just a bad batch of E85. Three fill ups later, still behaving that way. Getting annoyed, I haven't had my power in a while I gave her the beans on the freeway today easing into it. It actually went well and pulled like a champ, I was thinking OK! Here we go, it's better now. As soon as I let off the gas it started to misfire terribly and didn't stop. There was no where to pull over it was down to 2 lanes construction so I had to drive it about 3 miles like that (felt a part of me dying every second). Last week I did an oil change and decided to take a look at the air box... See picture. Obviously not good. Figured I had been running rich as not enough air was coming through and maybe I fouled a plug or two. I got off the free way and there was an AutoZone right there, got 6 plugs, adequate tools in truck already and I swapped all 6 plugs. See the issue?? Thank god that piece(s) didn't go through and grenade my motor. Two hours later, and a few scratched knuckles it fired right up, cleared codes, idled for about 20 minutes, took for test drive, no codes, no misfire, all the power back! Someone was looking out for me today!
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